Time & distance

Quantitative Aptitude (CHSL)

Title

45:30

8 of 24 completed

5 of 15 completed

38 of 100 completed

8 of 20 completed

Indian Economy - Understanding the basics of Indian economic system

A 640 metre long train travelling at 80 km/h overtook a 540 metre long train travelling at 72 km/h in the same direction. How

long did it take the faster train to cross the other train completely?

This questions was previously asked in

SSC CHSL 6th June 2022 Shift-3

8 minutes 41 seconds

9 minutes 09 seconds

9 minutes 01 second

8 minutes 51 seconds

- To calculate the time for the faster train to overtake the slower one, first find the relative speed.

- The faster train is moving at 80 km/h and the slower train at 72 km/h.

- Relative speed = 80 km/h - 72 km/h = 8 km/h.

- Convert this relative speed into meters per second: 8 km/h = (8 * 1000) / 3600 = 20/9 m/s.

- The total distance to be covered is the sum of both train lengths: 640 m + 540 m = 1180 m.

- Time taken = Total distance / Relative speed = 1180 m / (20/9 m/s) = 531 seconds.

- Convert 531 seconds to minutes: 531 seconds = 8 minutes and 51 seconds.

- Option 4: 8 minutes 51 seconds is the correct answer.